Hello everyone, I'm new here. I have read Otter's spyder pages inside and out and searched these forums about modifying the valve on my pilot. I have an '05 red/black pilot ACS, J & J S2 ceramic 14" barrel, Empire Re-loader hopper, Trinity locking feed tube, and polished internals. I want to mod the valve myself. I've read that the trend recently has been more to chamfer the edges of the valve port and smooth it more than re-drilling it. I'm contemplating taking my dremmel to it & beveling (chamfer) the edges of the port; as well as making the hole oval rather than round. I feel that I can leave the pin fairly stock. (Maybe make a second flat side) My ultimate goal is to make the valve more smooth operating versus lowering operating pressures. Has any one tried this type of mod or have any input on my ideas. Thanks in advance, it's a pleasure to be here.

Have an extra valve, so one of these days its goona happen, was thinking along the lines of you as in smoothing up the edges to help turbulence, went and pickup up a few dremel tools, and goona have at er soon. i have an extra valve to start with, so if the chamfering doest work, ya can cut more out of the same valve. but if i wreck it then i still got the stock one.

I get a certain amount of satisfaction from tinkering with my gun myself rather than buying pre-manufactured parts (like when I polished the internals). It's also why I've built 2 kit-kayaks at home, just tinkerin' away. Sparky, please keep me posted as to how the mod works out for you. I plan to mimic the Bandit Bolt brand replacement valve.

Haha yeah, I enjoy such stuff too, but the stock valve has problems... the part where the bottom screw comes up to holdit in place causes turbulence etc. Just grab an NDZ hp valve, they're great, and only 25$

Another thing to do, is make your VA high flowing, and drill and tap for a gauge, they look great.

That's great Sparky. Did you have to change springs also? What's your velocity? As I said before, I'm hoping to remain stock and just improve smoothness and reliability. (I've only chopped one ball & it was my own fault- didn't have the hopper turned on ) I hope to sit down and work on it this weekend.

with the va mod and the valve mod you will definatly need a spring kit.....i used a 32* kit so i could change the valve spring too.....couldnt get the thing under 300fps without the springs.....def get a spare valve.....you can mod the valve hold screw too if your careful